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Finding the Fourth Proportional to 139,289.60, 192,219.04 and 75,626.88

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Solution

The fourth proportional to 139,289.60, 192,219.04 and 75,626.88 is: 104,364.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,289.60 : 192,219.04 = 75,626.88 : x
  2. Step 2: Convert to fraction form
    139,289.60/192,219.04 = 75,626.88/x
  3. Step 3: Cross multiply
    139,289.60x = 192,219.04 × 75,626.88
  4. Step 4: Simplify right side
    139,289.60x = 14,536,926,271.80
  5. Step 5: Solve for x
    x = 14,536,926,271.80/139,289.60
  6. Step 6: Final answer
    x = 104,364.76

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.